Port server memcached on node 'ns_1@10.80.12.32' exited with status 134. Restarting. Messages: Vbucket <755> is going dead.

We use to have this error with 3 nodes (Enterprise Version), with a load balancer:

exited with status 134. Restarting. Messages: Extension support isn't implemented in this version of bucket_engine
memcached: objectregistry.cc:51: static void ObjectRegistry::onCreateBlob(Blob*): Assertion `stats.currentSize.get() < ((size_t)1<<(sizeof(size_t)*8-1))' failed. (repeated 7 times)

Searching on the issue tracker, we find #MB-4875 fits very well.
We didn't realize that 2 nodes was the top possible free usage of Couchbase (we are very sorry for this, and we're are waiting the police to arrive).

Next we setup just 2 nodes behind the load balancer. The two instances status, changed from orange to green, so, we check out the cache memory usage, and this value was very high, almost full, so we reset it.
Now the two nodes are green, but we're seing this error, a few times:

Port server memcached on node 'ns_1@10.80.12.32' exited with status 134. Restarting. Messages: Vbucket <755> is going dead.
Vbucket <756> is going dead.
Vbucket <757> is going dead.
Vbucket <758> is going dead.
Vbucket <759> is going dead.
Vbucket <760> is going dead.
Vbucket <761> is going dead.
Vbucket <762> is going dead.
Vbucket <763> is going dead.
Vbucket <764> is going dead.
Vbucket <765> is going dead.
Vbucket <766> is going dead.
Vbucket <767> is going dead.
Vbucket <768> is going dead.
Vbucket <769> is going dead.
Vbucket <770> is going dead.
Vbucket <771> is going dead.
Vbucket <772> is going dead.
Vbucket <773> is going dead.
Vbucket <774> is going dead.
Vbucket <775> is going dead.
Vbucket <776> is going dead.
Vbucket <777> is going dead.
Vbucket <778> is going dead.
Vbucket <779> is going dead.
Vbucket <780> is going dead.
Vbucket <781> is going dead.
Vbucket <782> is going dead.
Vbucket <783> is going dead.
Vbucket <784> is going dead.
Vbucket <785> is going dead.
Vbucket <786> is going dead.
Vbucket <787> is going dead.
Vbucket <788> is going dead.
Vbucket <789> is going dead.
Vbucket <790> is going dead.
Vbucket <791> is going dead.
Vbucket <792> is going dead.
Vbucket <793> is going dead.
Vbucket <794> is going dead.
Vbucket <795> is going dead.
Vbucket <796> is going dead.
Vbucket <797> is going dead.
Vbucket <798> is going dead.
Vbucket <799> is going dead.
Vbucket <800> is going dead.
Vbucket <801> is going dead.
Vbucket <802> is going dead.
Vbucket <803> is going dead.
Vbucket <804> is going dead.
Vbucket <805> is going dead.
Vbucket <806> is going dead.
Vbucket <807> is going dead.
Vbucket <808> is going dead.
Vbucket <809> is going dead.
Vbucket <810> is going dead.
Vbucket <811> is going dead.
Vbucket <812> is going dead.
Vbucket <813> is going dead.
Vbucket <814> is going dead.
Vbucket <815> is going dead.
Vbucket <816> is going dead.
Vbucket <817> is going dead.
Vbucket <818> is going dead.
Vbucket <819> is going dead.
Vbucket <820> is going dead.
Vbucket <821> is going dead.
Vbucket <822> is going dead.
Vbucket <823> is going dead.
Vbucket <824> is going dead.
Vbucket <825> is going dead.
Vbucket <826> is going dead.
Vbucket <827> is going dead.
Vbucket <828> is going dead.
Vbucket <829> is going dead.
Vbucket <830> is going dead.
Vbucket <831> is going dead.
Vbucket <832> is going dead.
Vbucket <833> is going dead.
Vbucket <834> is going dead.
Vbucket <835> is going dead.
Vbucket <836> is going dead.
Vbucket <837> is going dead.
Vbucket <838> is going dead.
Vbucket <839> is going dead.
Vbucket <840> is going dead.
Vbucket <841> is going dead.
Vbucket <842> is going dead.
Vbucket <843> is going dead.
Vbucket <844> is going dead.
Vbucket <845> is going dead.
Vbucket <846> is going dead.
Vbucket <847> is going dead.
Vbucket <848> is going dead.
Vbucket <849> is going dead.
Vbucket <850> is going dead.
Vbucket <851> is going dead.
Vbucket <852> is going dead.
Vbucket <853> is going dead.
memcached: objectregistry.cc:51: static void ObjectRegistry::onCreateBlob(Blob*): Assertion `stats.currentSize.get() < ((size_t)1<<(sizeof(size_t)*8-1))' failed.

But this second error, happens every time:

Port server moxi on node 'ns_1@10.80.12.145' exited with status 139. Restarting. Messages: 2012-06-12 15:55:43: (cproxy_config.c.317) env: MOXI_SASL_PLAIN_USR (13)
2012-06-12 15:55:43: (cproxy_config.c.326) env: MOXI_SASL_PLAIN_PWD (14)

i'm adding new data as we seing it.